Sinx-√2sin3x=-sin5x помогите
Sinx + Sin5x - √2Sin3x= 0 2Sin3x Cos2x - √2Sin3x = 0 Sin3x(2Cos2x - √2) = 0 Sin3x = 0 или 2Cos2x - √2 = 0 3x = πn , n ∈Z Cos2x = √2/2 x = πn/3, n ∈Z 2x = +-π/4 + 2πk , k ∈Z x = +-π/8 + πk , k ∈Z